1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --include-generated-funcs
2; RUN: opt -S -passes=verify,iroutliner -ir-outlining-no-cost < %s | FileCheck %s
3
4; When consolidating PHINodes, the outliner replaces the incoming value with
5; a corresponding value from the first outlined section.  When this replaced
6; value is passed in as an argument, the corresponding value is found outside
7; of the outlined region, and must be replaced with an argument to avoid
8; dominating value errors. This checks that we use the argument to replace
9; the incoming value.
10
11define void @func1(i32 %0, i32 %1) local_unnamed_addr #0 {
12bb1:
13  br label %bb5
14
15bb2:
16  %a = add i32 %0, %1
17  %b = add i32 %0, %1
18  %c = icmp eq i32 %b, %a
19  br i1 %c, label %bb5, label %bb3
20
21bb3:
22  %d = add i32 %0, %1
23  br label %bb5
24
25bb4:
26  %e = sub i32 %0, %1
27  br label %bb2
28
29bb5:
30  ret void
31}
32
33define void @func2(i32 %0, i32 %1) local_unnamed_addr #0 {
34bb1:
35  br label %bb5
36
37bb2:
38  %a = sub i32 %0, %1
39  %b = add i32 %0, %1
40  %c = icmp eq i32 %b, 1
41  br i1 %c, label %bb5, label %bb3
42
43bb3:
44  %d = add i32 %0, %1
45  br label %bb5
46
47bb4:
48  %e = add i32 %0, %1
49  br label %bb2
50
51bb5:
52  %f = phi i32 [ 0, %bb1 ], [ 1, %bb2 ], [ 1, %bb3 ]
53  ret void
54}
55; CHECK-LABEL: @func1(
56; CHECK-NEXT:  bb1:
57; CHECK-NEXT:    br label [[BB5:%.*]]
58; CHECK:       bb2:
59; CHECK-NEXT:    [[A:%.*]] = add i32 [[TMP0:%.*]], [[TMP1:%.*]]
60; CHECK-NEXT:    call void @outlined_ir_func_0(i32 [[TMP0]], i32 [[TMP1]], i32 [[A]], ptr null, i32 -1)
61; CHECK-NEXT:    br label [[BB5]]
62; CHECK:       bb4:
63; CHECK-NEXT:    [[E:%.*]] = sub i32 [[TMP0]], [[TMP1]]
64; CHECK-NEXT:    br label [[BB2:%.*]]
65; CHECK:       bb5:
66; CHECK-NEXT:    ret void
67;
68;
69; CHECK-LABEL: @func2(
70; CHECK-NEXT:  bb1:
71; CHECK-NEXT:    [[F_CE_LOC:%.*]] = alloca i32, align 4
72; CHECK-NEXT:    br label [[BB5:%.*]]
73; CHECK:       bb2:
74; CHECK-NEXT:    [[A:%.*]] = sub i32 [[TMP0:%.*]], [[TMP1:%.*]]
75; CHECK-NEXT:    call void @llvm.lifetime.start.p0(i64 -1, ptr [[F_CE_LOC]])
76; CHECK-NEXT:    call void @outlined_ir_func_0(i32 [[TMP0]], i32 [[TMP1]], i32 1, ptr [[F_CE_LOC]], i32 0)
77; CHECK-NEXT:    [[F_CE_RELOAD:%.*]] = load i32, ptr [[F_CE_LOC]], align 4
78; CHECK-NEXT:    call void @llvm.lifetime.end.p0(i64 -1, ptr [[F_CE_LOC]])
79; CHECK-NEXT:    br label [[BB5]]
80; CHECK:       bb4:
81; CHECK-NEXT:    [[E:%.*]] = add i32 [[TMP0]], [[TMP1]]
82; CHECK-NEXT:    br label [[BB2:%.*]]
83; CHECK:       bb5:
84; CHECK-NEXT:    [[F:%.*]] = phi i32 [ 0, [[BB1:%.*]] ], [ [[F_CE_RELOAD]], [[BB2]] ]
85; CHECK-NEXT:    ret void
86;
87;
88; CHECK-LABEL: define internal void @outlined_ir_func_0(
89; CHECK-NEXT:  newFuncRoot:
90; CHECK-NEXT:    br label [[BB2_TO_OUTLINE:%.*]]
91; CHECK:       bb2_to_outline:
92; CHECK-NEXT:    [[B:%.*]] = add i32 [[TMP0:%.*]], [[TMP1:%.*]]
93; CHECK-NEXT:    [[C:%.*]] = icmp eq i32 [[B]], [[TMP2:%.*]]
94; CHECK-NEXT:    br i1 [[C]], label [[PHI_BLOCK:%.*]], label [[BB3:%.*]]
95; CHECK:       bb3:
96; CHECK-NEXT:    [[D:%.*]] = add i32 [[TMP0]], [[TMP1]]
97; CHECK-NEXT:    br label [[PHI_BLOCK]]
98; CHECK:       bb5.exitStub:
99; CHECK-NEXT:    switch i32 [[TMP4:%.*]], label [[FINAL_BLOCK_0:%.*]] [
100; CHECK-NEXT:    i32 0, label [[OUTPUT_BLOCK_1_0:%.*]]
101; CHECK-NEXT:    ]
102; CHECK:       output_block_1_0:
103; CHECK-NEXT:    store i32 [[TMP5:%.*]], ptr [[TMP3:%.*]], align 4
104; CHECK-NEXT:    br label [[FINAL_BLOCK_0]]
105; CHECK:       phi_block:
106; CHECK-NEXT:    [[TMP5]] = phi i32 [ [[TMP2]], [[BB2_TO_OUTLINE]] ], [ [[TMP2]], [[BB3]] ]
107; CHECK-NEXT:    br label [[BB5_EXITSTUB:%.*]]
108; CHECK:       final_block_0:
109; CHECK-NEXT:    ret void
110;
111